Lesson 2 Flashcards
covers the plant body, consists of epidermis
dermal tissue
single layer cells that make up the epidermis
parenchyma
prevents water loss by transpiration
epidermis
waxy material produced by epidermis
cuticle
opening in the epidermis on the underside of a leaf where gases are exchanged
stomata
sausage-shaped found on each side of stomata to help open and close pore to prevent water loss
guard cells
functions primarily in storage, support, photosynthesis and the production of defensive and attractive substance
ground tissue
3 types of ground tisse
parenchyma
collenchyma
slerenchyma
cells have thin primary walls and forms the “filler” tissue in the soft parts of the plant
parenchyma
cells have thin primary walls with secondary thickening; provides extra structural support, allows plant to bend without breaking
collenchyma
dead cells with no protoplasm have thick lignified secondary walls; provides main structural support to plant
sclerenchyma
these are dividing cells, found in the zones of the plant where growth takes place
meristems or meristematic cells
3 main types of mesistematic tissues
apical
intercalary
lateral
the conductive or “plumbing” system of the plant
vascular tissue
transports carbohydrates from leaves to other parts of the plant
phloem
distributes water and mineral ions taken up by the root the the stem and leaves
xylem
Causes primary growth
Occurs at the tips of shoots and roots
Apical meristems
Causes secondary growth
Occurs at cambium
Produces bark on trees
Lateral meristems
Found flesh of fruit like pears
Also in pips of fruit and shells of nuts
Scleroid/stone cells
